Question about Pentair 150k Minimax Ch Ng Mv Heater

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Pentair Minimax CH 150 Flame does not kick on. I jumpered white wires on thermostat board - jumped TH/PP & TH and flame comes on until I take off jumper wire. Is there a way to trouble shoot Hi Limit, safety shut-off, or pressure switch to see if these are faulty?

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Posted on Jan 02, 2017

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SOURCE: MiniMax 250 main burner will not light

I have the same issue, Any luck with which part may need replacing?

Posted on Jun 18, 2010

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Pentair minimax nt heater


its not sensing flame you have to look at the burners make sure all of them light. Many times spiders wil get into the gas jets, you can use a number 12 solid copper wire to insert it into the gas jet you will see it ,the flame sensor burner is not having a good flame

Apr 12, 2014 | Pentair Minimax NT Heater

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The pilot light on my pentair minimax ch 250m will light, but when i switch button from pilot to on the flame goes out on the pool heater.


More than likley this is a bad thermocouple and will need a new pilot assembly. But it can also be a short in the safty circut, rat chewed wires or a bad gas valve. It may be best to get a repairman involved. Or you can just drop each switch out of line and jump past them to check. But part changeing can get pricy. Good luck.

Jun 23, 2010 | Pentair Minimax NT Heater

2 Answers

MiniMax 250 main burner will not light


I have the same issue, Any luck with which part may need replacing?

Aug 03, 2009 | Pentair 250k Minimax Ch Ng Mv Heater

1 Answer

I have a minimax 250 i can light the pilot but the main burner will not light. i jump the th to th/pp and the pilot goes out.


are you sure your jumping th and th/pp? the labeling on valve is a little deceptive.should use 1st and 3rd terminal on gas valve. if your using correct terminals try same thing with thermostat wires disconnected from gas valve. this will isolate valve from all controls and safties.if it fires valve is good and need to look in thermostat loop for problems. hope this helps

Jul 18, 2009 | Pentair 250k Minimax Ch Ng Mv Heater

1 Answer

Flame wont stay lit


Sounds like a flame sensor problem. The board is not getting the proper signal from the flame sensor so it thinks the burner did not light and shuts the gas supply off. It keeps the blower operating to ensure that no gas is accumulated in the burner area. I suggest you contact a local mechanical contractor to service your heater.

Jun 23, 2009 | Pentair Minimax NT Heater

1 Answer

Pentair Minimax 250M


how many times it blink will tell you what is wrong check at the codes. unplug thermostat check fo homs 10 k around is fine at 80 degrees pressure switch require a by pass but DO NOT RUN THE HEATER WITH A BY PASS ANY CONTROL!!!!

Jun 17, 2009 | Pentair 250k Minimax Ch Ng Mv Heater

1 Answer

Pentair 250 CH LP will not ignite. Pilot works


to test the presure sensor jump the wires that plug in to the sensor if it turns on the presure sensor is bad and the the thermostat do you mean thermo sensor the one that checks the water tep follow the wires to were they plug in turn power off get your finger wet and put it were it plugs in on the 2 prong and turn it on the heater will light up if the sensor is bad

May 11, 2009 | Pentair 250k Minimax Ch Lp Mv Heater

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